What impact did the 13th 14th and 15th amendments to the constitution have on african americans and others?

The 13th, 14th, and 15th amendments to the constitution adopted during the Reconstruction period in America. The amendments gave rights to the African American and others by making slavery prohibited( illegal) along with equal citizenship and equal protection of the laws to everyone. The 15th amendment allowed the citizens (African Americans and others) to vote without any denial from the state and federal governments. These amendments allowed African Americans and others to gain their identity and freedom.

president thomas jefferson commissioned the expedition shortly after the louisiana purchase in 1803 to explore and to map the newly acquired territory, to find a practical route across the western half of the continent, and to establish an american presence in this territory before britain and other european powers

yellow fever and other tropical diseases